Poly(ethylene oxide)
[化] 聚环氧乙烷
🗣️ 情景例句
Large or Little?
大杯还是小杯？
I'm not sure what time I'm coming back.
我不肯定我什么时间回来。
I can't remember. Did I put them under the table?
我想不起来了。 放在桌子下面了吗？